Effect of Ladle, Tundish and Mold Design on Melt Flow Parameters

Abstract

Qualitative and quantitative characterization of melt flow in Ar-stirred ladle, tundish, and mold is important for analysis and improvement of steelmaking process design. Several approaches are used for melt flow analysis, including industrial measurements, physical (water) modeling, and CFD simulations. In this article, an integrated CFD-combined reactors (CR) approach is used to generalize the melt flow parameters in metallurgical vessels. As the first step, CFD simulations were used to obtain the pattern and intensity of the melt flow in the vessels (ladle, tundish, or continuous caster mold). From these simulations, the characteristic curves were derived: The residence time distribution curves for "flow-through" systems (at tundish exit or at the surface of dendrite coherency for continuous casting) or the mixing curves for "closed" systems (e.g. ladle). In the next step, the melt flow was represented in a CR system consisting of a combination of unit reactors (Plug Flow, Mixer, and Recirculated Volume). To achieve similarity of melt flow in CFD and CR models, an inverse simulation was used to define the volumes of the unit reactors and the melt flow rates between them by matching the characteristic curves. This generalized approach was used for analysis of the effects of: (i) plug location in Ar-stirred ladles, (ii) tundish design, and (iii) SEN designs on melt flow in the mold. © 2014 by AIST.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Combined reactors; Ladle; Melt flow; Modeling; Mold; Tundish

International Standard Book Number (ISBN)

978-193511742-1

International Standard Serial Number (ISSN)

1551-6997

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Ronald E. Ashburn, All rights reserved.

Publication Date

01 Jan 2014

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